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Rear Caliper Not Releasing

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#1 james.a

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Posted 22 March 2018 - 08:16 PM

I have tried the search function but achieved nothing so apologies if this is already on here somewhere. My rear Caliper is sticking, have taken out pads, cleaned and wound in cylinder and re fitted, but after a couple of pumps on the middle pedal it is still holding quite a grip on the right rear. Any suggestions as to what this might be and how to resolve it?

#2 Tony H

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Posted 22 March 2018 - 09:31 PM

Maybe the handbrake? You can move the spring by hand to check.

#3 james.a

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Posted 22 March 2018 - 10:22 PM

Handbrake wasnt on when I tested it. Would this affect it?

#4 mbes2

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Posted 23 March 2018 - 07:27 AM

http://www.myautorep...r-sticking.html



#5 Rosssco

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Posted 23 March 2018 - 09:06 AM

You can try taking out and lubing the slider pin, but its likely that its the internal hand brake mechanism and / or piston that is sticking, which means taking the thing apart to clean etc. You might be easier getting it refurbished or a new caliper TBH..

#6 quimbles

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Posted 23 March 2018 - 12:46 PM

set on FB for sale, £240



#7 Spitfire Engineering

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Posted 23 March 2018 - 01:10 PM

Most likely the slider pins are worn/dirty/ etc

 

We might make these is a good quality stainless as it's a common issue.

 

:)



#8 Tony H

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Posted 23 March 2018 - 02:42 PM

Can't you dream up an aluminium caliper with handbrake.



#9 james.a

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Posted 23 March 2018 - 03:04 PM

it doesn't feel great on the slider pin so may strip this down, clean and go again. Any idea for which grease is best?

 



#10 Wolfstone

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Posted 23 March 2018 - 11:12 PM

Any idea for which grease is best?  

The original. All sequels are generally sh*t. :lol:

#11 Spitfire Engineering

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Posted 24 March 2018 - 09:38 AM

Can't you dream up an aluminium caliper with handbrake.

 

I can, but by the time you add in all the personal preferences i.e same piston area, AP's on the rear, cost, etc it is better to go down the route we have....

 

More soon

 

:)



#12 Spitfire Engineering

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Posted 24 March 2018 - 09:45 AM

it doesn't feel great on the slider pin so may strip this down, clean and go again. Any idea for which grease is best?

 

 

The grease is not worked as such but it does need to be stable at very high temperatures.

There is probably something made for this application I would guess.

 

something like this, but loads out there.

https://www.amazon.c...P/dp/B004WJPN2A



#13 james.a

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Posted 24 March 2018 - 06:42 PM

cheers have ordered some.







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